NexSub – Live subtitles for any online video, 100% offline and private. Watch YouTube, Netflix, live streams, or Zoom calls—NexSub captures system audio in real-time and generates accurate subtitles right on your machine. No cloud, no uploads, no subscriptions. Supports 100+ languages with bilingual display. Latency under 1.5s. One-click export to SRT/VTT. Perfect for travelers, privacy-conscious teams, and anyone tired of missing captions. Subtitles for everything you watch. Yours alone.